Under the carpet , there should be rubber plugs in several locations. Just cut a slit in the rubber and proceed with your wire, just silicone when you are done. Another good spot is the rubber grommet in the drivers side firewall.

I used the grommet on the ds corner of the firewall. Going to put in an aux fuse block for lights,cb,winch remote and whatever other crap I put in so I won't have to run multiple power wires. I'll put up a few pics up tomorrow